All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=792915

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=bacbff5f54c23243c737e2a947e1e8e247f697ae400f595e5d5423b0bd134885


Bot(s) for this bug's original alert(s):

android-webview-nexus6

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8960854706566223680

=== BISECT JOB RESULTS ===
NO Perf regression found

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : thread_times.key_silk_cases
  Metric       : thread_GPU_cpu_time_per_frame/infinite_scrolling.html

Revision             Result                  N
chromium@521495      2.15649 +- 1.35045      21      good
chromium@521570      2.06732 +- 1.14602      21      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-webview --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=infinite.scrolling.html thread_times.key_silk_cases

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8960854706566223680


For feedback, file a bug with component Speed>Bisection

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8960850776617353152

=== BISECT JOB RESULTS ===
Perf regression found with culprit

Suspected Commit
  Author : Chris Harrelson
  Commit : a3e4477c29d087d3708dbcb4dc5a90985c2b45e3
  Date   : Tue Dec 05 01:51:58 2017
  Subject: [PE] Turn on half-width tiles for all platforms and devices.

Bisect Details
  Configuration: android_webview_nexus6_aosp_perf_bisect
  Benchmark    : thread_times.key_silk_cases
  Metric       : thread_GPU_cpu_time_per_frame/infinite_scrolling.html
  Change       : 52.89% | 2.17067161541 -> 3.31882997088

Revision             Result                    N
chromium@521495      2.17067 +- 0.734416       6      good
chromium@521554      2.10854 +- 0.64477        6      good
chromium@521583      1.97698 +- 0.0420026      6      good
chromium@521585      2.00539 +- 0.180875       6      good
chromium@521586      3.16885 +- 0.0572665      6      bad       <--
chromium@521587      3.19186 +- 0.254093       6      bad
chromium@521591      3.17528 +- 0.148847       6      bad
chromium@521598      3.13497 +- 0.0663125      6      bad
chromium@521612      3.31883 +- 0.609876       6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-webview --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=infinite.scrolling.html thread_times.key_silk_cases

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8960850776617353152


For feedback, file a bug with component Speed>Bisection